The removal of the option to display the old projects page is causing the sidebar to disappear on attempts to navigate to the Agile tabs of the new projects page ("Backlog" / "Active Sprints") for customers who had chosen to disable the new projects page.
- Navigate to the "Backlog" / "Active Sprints" in the sidebar with a user account that had disabled the sidebar in the past.
- Notice the project sidebar is gone.
The project sidebar stays on the left-hand side at all times
The project sidebar disappears.
This issue is affecting production customers that had decided to opt out from the sidebar, and that got the newest version of jira-projects bundled in JIRA 7.0.0-OD-02-247.
Navigate to Reports in the Agile Board and navigate to the projects page again and the sidebar will show up again. This will have to be done again on further attempts to navigate to either the "Backlog"/"Active Sprints" tabs in the sidebar.
Contact Atlassian Cloud support for a fix for this problem.